Question

36000j heat produced in heater of resistance 1000 ohm in 5 min find current ​

Answer 1

${ \huge{ \tt{ \underline{ \underline{ \pink{Solution : }}}}}}$

$\bf{→ H = 36000j}$

$\bf{→ T = 300scc}$

$\bf{→1000r}$

$\bf{→ H = {I}^{2} RT}$

$\bf{→\sqrt{ I = \frac{H }{RT}}}$

$\bf{→ \sqrt \frac{{36000}}{{1000 \times 300}}}$

$\bf{→ \sqrt{0.12}}$

$\bf \orange{→ 0.35A }$

Answer 2

h= i^2 ×r×t

36000=i^2×1000×300

36000=i^2×300000

36000/300000=i^2

0.12=i^2

i =√0.12

=0.35 A